World Pumps 50 Years - Plad

2000 BC Egyptians invent the shadoof 200 BC Ctesibius invents the reciprocating pump; Archimedean screw pump described (but not invented) by Archimedes 1580 Sliding vane pump invented by

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Electronic Densimeter SD-200L For measuring solid and liquid specific gravity; Density resolution: 0.0001g/cm3 Capable of measuring solid specific gravity and volume, and its variations down to